The regional structures, rock microstructures and fluid inclusion trail patterns have been employed to determine the evolution of the Jakhri Thrust Zone (JTZ). The JTZ is a break back thrust cutting across the folded Lesser Himalayan Crystalline nappe and is best exposed in the Kulu-Rampur window zone of the NW Himalaya. The microstructures in the JTZ suggest SW directed ductile shearing and a progressively decreasing finite strain away from the thrust in the footwall. The quartz recrystallization, microstructures and presence of chlorite in the thrust zone indicate lower greenschist facies P–T conditions during deformation. The microstructures and fluid inclusion trails (secondary) show analogous patterns suggesting that the latter would have formed by the healing of microfractures during shearing in the footwall. The microthermic studies on these fluid inclusions suggest that the CO 2–H 2O inclusions have been emplaced and reequilibrated during peak deformation whereas the H 2O–NaCl inclusions reequilibrated during footwall exhumation. The density and salinity of fluid inclusions were also reset during the same exhumation. The isochores of CO 2–H 2O and H 2O–NaCl inclusions in the greenschist facies suggest an isothermal exhumation path from a depth of ∼15 to 17 km, assuming lithostatic pressure conditions. These results in the JTZ emphasize the utility of fluid inclusions in tectonic studies.